White & Case has strengthened its capabilities in mergers and acquisitions, energy, and sustainability by welcoming Peter Trimarchi as a partner in its New York office. This move supports the firm’s ongoing expansion of its Global M&A Practice, Global Energy Industry Group, and Sustainability & Responsible Business Practice.
Trimarchi brings extensive experience in environmental law, advising clients on regulatory compliance in corporate transactions and the development of renewable energy projects. His work includes navigating ecological and land-use permitting for large-scale infrastructure and energy initiatives, guiding lenders on environmental risks, and addressing complex issues such as climate change, ESG factors, and PFAS-related concerns. He also represents clients in environmental litigation and enforcement matters.
This appointment marks a return for Trimarchi, who previously served as an associate at White & Case from 2001 to 2007 before becoming a partner at another firm. His rejoining adds depth to the firm’s environmental expertise at a time when regulatory scrutiny and sustainability considerations are increasingly central to corporate strategy and investment decisions.
Trimarchi’s arrival follows other recent additions to the firm’s energy practice, including John Donaleski in New York and Patrick Johnson in Houston, both of whom specialize in project development and finance. These hires reflect White & Case’s commitment to building a team capable of advising clients on the legal and regulatory challenges of energy transition, infrastructure development, and responsible business practices across global markets.
KEY QUOTES:
“Peter’s addition supports the continued growth of our preeminent energy capabilities. We also have significant demand for environmental regulatory advice across industries to support our clients in key transactions, and Peter brings strong experience to advise on such matters.”
White & Case Chair Heather McDevitt
“White & Case is known for advising on the largest, most complex deals in the energy sector and forward-thinking environmental risk assessment is an important element of these matters. Peter’s arrival strengthens our US team, and further supports our ability to provide sophisticated environmental expertise in M&A and other strategic transactions.”
Taylor Pullins, Co-Head of the firm’s Sustainability & Responsible Business Practice
